package demo.practice.dp;

public class P70 {

    public static void main(String[] args) {
        P70 p70 = new P70();
        p70.climbStairs(5);
    }




    public int climbStairs(int n) {
        int dp[] = new int[n + 1];
        dp[0] = 1;
        dp[1] = 1;
        for (int i = 2; i <= n; i++) {
            dp[i] = dp[i - 1] + dp[i - 2];
        }
        return dp[n];
    }
}
